1.\" Copyright (c) 2016 The DragonFly Project 2.\" Copyright (c) 2014 The FreeBSD Foundation 3.\" All rights reserved. 4.\" 5.\" This software was developed by Edward Tomasz Napierala under sponsorship 6.\" from the FreeBSD Foundation. 7.\" 8.\" Redistribution and use in source and binary forms, with or without 9.\" modification, are permitted provided that the following conditions 10.\" are met: 11.\" 1. Redistributions of source code must retain the above copyright 12.\" notice, this list of conditions and the following disclaimer. 13.\" 2. Redistributions in binary form must reproduce the above copyright 14.\" notice, this list of conditions and the following disclaimer in the 15.\" documentation and/or other materials provided with the distribution. 16.\" 17.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 18.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 21.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27.\" SUCH DAMAGE. 28.\" 29.\" $FreeBSD$ 30.\" 31.Dd October 12, 2017 32.Dt FSTYP 8 33.Os 34.Sh NAME 35.Nm fstyp 36.Nd determine filesystem type 37.Sh SYNOPSIS 38.Nm 39.Op Fl l 40.Op Fl s 41.Op Fl u 42.Ar special 43.Sh DESCRIPTION 44The 45.Nm 46utility is used to determine the filesystem type on a given device. 47It can recognize ISO-9660, Ext2, FAT, NTFS, UFS, HAMMER, and HAMMER2 filesystems. 48When the 49.Fl u 50flag is specified, 51.Nm 52also recognizes certain additional metadata formats that cannot be 53handled using 54.Xr mount 8 . 55.Pp 56The filesystem name is printed to the standard output 57as, respectively: 58.Bl -item -offset indent -compact 59.It 60cd9660 61.It 62ext2fs 63.It 64msdosfs 65.It 66ntfs 67.It 68ufs 69.It 70hammer 71.It 72hammer2 73.El 74.Pp 75Note that HAMMER filesystem consists of more than one volumes requires a path in blkdevs format. 76See 77.Xr hammer 8 78for blkdevs format. 79.Nm 80doesn't recognize partially specified block devices as HAMMER filesystem volumes unless 81.Fl u 82flag is specified. 83.Pp 84Because 85.Nm 86is built specifically to detect filesystem types, it differs from 87.Xr file 1 88in several ways. 89The output is machine-parsable, filesystem labels are supported, 90and does not try to recognize any file format other than filesystems. 91.Pp 92These options are available: 93.Bl -tag -width ".Fl l" 94.It Fl l 95In addition to filesystem type, print filesystem label if available. 96.It Fl s 97Ignore file type. 98By default, 99.Nm 100only works on regular files and disk-like device nodes. 101Trying to read other file types might have unexpected consequences or hang 102indefinitely. 103.It Fl u 104Include filesystems and devices that cannot be mounted directly by 105.Xr mount 8 . 106.El 107.Sh EXIT STATUS 108The 109.Nm 110utility exits 0 on success, and >0 if an error occurs or the filesystem 111type is not recognized. 112.Sh SEE ALSO 113.Xr file 1 , 114.Xr autofs 5 , 115.Xr hammer 8 , 116.Xr hammer2 8 , 117.Xr mount 8 118.Sh HISTORY 119The 120.Nm 121command appeared in 122.Fx 10.2 . 123The 124.Nm 125command appeared in 126.Dx 4.5 . 127.Sh AUTHORS 128.An -nosplit 129The 130.Nm 131utility was developed by 132.An Edward Tomasz Napierala Aq Mt trasz@FreeBSD.org 133under sponsorship from the FreeBSD Foundation. 134ZFS and GELI support was added by 135.An Allan Jude Aq Mt allanjude@FreeBSD.org . 136.Pp 137The 138.Nm 139utility was ported to 140.Dx 141by 142.An Tomohiro Kusumi Aq Mt kusumi.tomohiro@gmail.com . 143Donated to DragonFlyBSD by PeerCorps Trust Fund. 144.Sh BUGS 145The 146.Nm 147utility on 148.Dx 149currently doesn't support 150.Xr zfs 8 151pool and 152.Xr geli 8 153providers supported on 154.Fx . 155